How to create slider in dashboard template

Hi, Sorry to knock on an old door but this does not work at all for me on chromium from a ui_template (assuming the code came from one because the import of code does not work for me either).

I have been struggling with ui_template ng-slider for days now and have just raised a new topic:
https://discourse.nodered.org/t/ui-template-md-slider-help/37328/2

I get:
image

best regards
oz